AutoCodes – Cadillac – P1E9D Cadillac

P1E9D Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Long Term Memory Performance

Quick Answer

The hybrid battery interface control module 3 will diagnose its own systems and determine when a fault condition is present. Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1E9D Cadillac indicates Hybrid/EV Battery Interface Control Module 3 Long Term Memory Performance.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module 3, Hybrid/EV Battery Interface Control Module 3 harness is open or shorted, Hybrid/EV Battery Interface Control Module 3 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 723

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E9D Cadillac Description

The hybrid battery interface control module 3 will diagnose its own systems and determine when a fault condition is present. This diagnostic applies to internal microprocessor integrity conditions within the hybrid battery interface control module 3. This fault is internal to the hybrid battery interface control module 3 and no external circuits are involved.

OBDII Code P1E9D Cadillac - Hybrid/EV Battery Interface Control Module 3 Long Term Memory Performance - AutoCodes.com — P1E9D Cadillac Code - Hybrid/EV Battery Interface Control Module 3 Long Term Memory Performance

What does this mean?

What are the Possible Causes of the DTC P1E9D Cadillac?

Faulty Hybrid/EV Battery Interface Control Module 3
Hybrid/EV Battery Interface Control Module 3 harness is open or shorted
Hybrid/EV Battery Interface Control Module 3 circuit poor electrical connection

How to Fix the DTC P1E9D Cadillac?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1E9D Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1E9D Cadillac code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1E9D Cadillac Code

1. What does the OBDII code P1E9D mean on a Cadillac?

The P1E9D code indicates an issue with the Hybrid/EV Battery Interface Control Module 3's long-term memory performance, meaning the module may have difficulty retaining or accessing stored data.

2. What are the common symptoms of code P1E9D in a Cadillac?

Common symptoms include a check engine light or hybrid/EV system warning, reduced vehicle performance, limited hybrid functionality, or issues with battery charging and discharging.

3. What causes the P1E9D code to appear?

This code can be caused by corrupted data in the control module, a faulty Hybrid/EV Battery Interface Control Module 3, software glitches, poor electrical connections, or a low-voltage battery issue.

4. Can I drive my Cadillac with the P1E9D code?

While the vehicle may still operate, driving with this code is not recommended as it could lead to reduced hybrid system performance or further damage.

5. How is the P1E9D code diagnosed?

A technician will use a scan tool to verify the code, inspect wiring and connectors for damage or corrosion, check the module's power supply, and potentially test the control module's memory functionality.

6. What are the repair options for a P1E9D code?

Repairs may include reprogramming or resetting the control module, repairing damaged wiring or connectors, replacing the Hybrid/EV Battery Interface Control Module 3, or addressing any related low-voltage battery issues.

7. Is the P1E9D code covered under warranty for a Cadillac?

This depends on your vehicle's warranty terms, but hybrid/EV components are often covered under extended warranties. Check with your dealership for specific coverage details.

8. How much does it cost to fix the P1E9D code on a Cadillac?

Repair costs vary depending on the issue. Reprogramming the module may cost $100-$200, while module replacement can exceed $1,000, including parts and labor.

9. Can a software update fix the P1E9D code?

Yes, in some cases, a software update or reprogramming of the control module can resolve the issue if it is caused by a software glitch.

10. What should I do if the P1E9D code reappears after repairs?

If the code returns, have the system rechecked for any missed issues, such as intermittent wiring problems, or verify that the replacement module was correctly installed and programmed.